#! /bin/sh
#
# GMP config.guess wrapper.


# Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2011 Free Software
# Foundation, Inc.
#
# This file is part of the GNU MP Library.
#
# The GNU MP Library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# The GNU MP Library is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.


# Usage: config.guess
#
# Print the host system CPU-VENDOR-OS.
#
# configfsf.guess is run and its guess then sharpened up to take advantage
# of the finer grained CPU types that GMP knows.


# Expect to find configfsf.guess in the same directory as this config.guess
configfsf_guess="`echo \"$0\" | sed 's/config.guess$/configfsf.guess/'`"
if test "$configfsf_guess" = "$0"; then
  echo "Cannot derive configfsf.guess from $0" 1>&2
  exit 1
fi
if test -f "$configfsf_guess"; then
  :
else
  echo "$configfsf_guess not found" 1>&2
  exit 1
fi

# Setup a $SHELL with which to run configfsf.guess, using the same
# $CONFIG_SHELL or /bin/sh as autoconf does when running config.guess
SHELL=${CONFIG_SHELL-/bin/sh}

# Identify ourselves on --version, --help or errors
if test $# != 0; then
  echo "(GNU MP wrapped config.guess)"
  $SHELL $configfsf_guess "$@"
  exit 1
fi

guess_full=`$SHELL $configfsf_guess`
if test $? != 0; then
  exit 1
fi

guess_cpu=`echo "$guess_full" | sed 's/-.*$//'`
guess_rest=`echo "$guess_full" | sed 's/^[^-]*//'`
exact_cpu=


# -------------------------------------------------------------------------
# The following should look at the current guess and probe the system to
# establish a better guess in exact_cpu.  Leave exact_cpu empty if probes
# can't be done, or don't work.
#
# When a number of probes are done, test -z "$exact_cpu" can be used instead
# of putting each probe under an "else" of the preceeding.  That can stop
# the code getting horribly nested and marching off the right side of the
# screen.

# Note that when a compile-and-link is done in one step we need to remove .o
# files, since lame C compilers generate these even when not asked.
#

dummy=dummy-$$
trap 'rm -f $dummy.c $dummy.o $dummy.core $dummy ${dummy}1.s ${dummy}2.c ; exit 1' 1 2 15

# Use $HOST_CC if defined. $CC may point to a cross-compiler
if test x"$CC_FOR_BUILD" = x; then
  if test x"$HOST_CC" != x; then
    CC_FOR_BUILD="$HOST_CC"
  else
    if test x"$CC" != x; then
      CC_FOR_BUILD="$CC"
    else
      echo 'dummy(){}' >$dummy.c
      for c in cc gcc c89 c99; do
	  ($c $dummy.c -c) >/dev/null 2>&1
	  if test $? = 0; then
	      CC_FOR_BUILD="$c"; break
	  fi
      done
      rm -f $dummy.c $dummy.o
      if test x"$CC_FOR_BUILD" = x; then
	CC_FOR_BUILD=no_compiler_found
      fi
    fi
  fi
fi


case "$guess_full" in

alpha-*-*)
  # configfsf.guess detects exact alpha cpu types for OSF and GNU/Linux, but
  # not for *BSD and other systems.  We try to get an exact type for any
  # plain "alpha" it leaves.
  #
  # configfsf.guess used to have a block of code not unlike this, but these
  # days does its thing with Linux kernel /proc/cpuinfo or OSF psrinfo.
  #
  cat <<EOF >$dummy.s
	.data
Lformat:
	.byte 37,100,45,37,120,10,0	# "%d-%x\n"
	.text
	.globl main
	.align 4
	.ent main
main:
	.frame \$30,16,\$26,0
	ldgp \$29,0(\$27)
	.prologue 1
	.long 0x47e03d91 # implver \$17
	lda \$2,-1
	.long 0x47e20c21 # amask \$2,\$1
	lda \$16,Lformat
	not \$1,\$18
	jsr \$26,printf
	ldgp \$29,0(\$26)
	mov 0,\$16
	jsr \$26,exit
	.end main
EOF
  $CC_FOR_BUILD $dummy.s -o $dummy 2>/dev/null
  if test "$?" = 0 ; then
    case `./$dummy` in
    0-0)	exact_cpu=alpha      ;;
    1-0)	exact_cpu=alphaev5   ;;
    1-1)	exact_cpu=alphaev56  ;;
    1-101)	exact_cpu=alphapca56 ;;
    2-303)	exact_cpu=alphaev6   ;;
    2-307)	exact_cpu=alphaev67  ;;
    2-1307)	exact_cpu=alphaev68  ;;
    esac
  fi
  rm -f $dummy.s $dummy.o $dummy
  ;;

ia64*-*-*)
  # CPUID[3] bits 24 to 31 is the processor family.  itanium2 is documented
  # as 0x1f, plain itanium has been seen returning 0x07 on two systems, but
  # haven't found any documentation on it as such.
  #
  # Defining both getcpuid and _getcpuid lets us ignore whether the system
  # expects underscores or not.
  #
  # "unsigned long long" is always 64 bits, in fact on hpux in ilp32 mode
  # (which is the default there), it's the only 64-bit type.
  #
  cat >${dummy}a.s <<EOF
	.text
	.global	_getcpuid
	.proc	_getcpuid
_getcpuid:
	mov	r8 = CPUID[r32] ;;
	br.ret.sptk.many rp ;;
	.endp	_getcpuid
	.global	getcpuid
	.proc	getcpuid
getcpuid:
	mov	r8 = CPUID[r32] ;;
	br.ret.sptk.many rp ;;
	.endp	getcpuid
EOF
  cat >${dummy}b.c <<EOF
#include <stdio.h>
unsigned long long getcpuid ();
int
main ()
{
  if (getcpuid(0LL) == 0x49656E69756E6547LL && getcpuid(1LL) == 0x6C65746ELL)
    {
      /* "GenuineIntel" */
      switch ((getcpuid(3LL) >> 24) & 0xFF) {
      case 0x07: puts ("itanium");  break;
      case 0x1F: puts ("itanium2"); break; /* McKinley, Madison */
      case 0x20: puts ("itanium2"); break; /* Montecito */
      }
    }
  return 0;
}
EOF
  if $CC_FOR_BUILD ${dummy}a.s ${dummy}b.c -o $dummy >/dev/null 2>&1; then
    exact_cpu=`./$dummy`
  fi
  rm -f ${dummy}a.s ${dummy}a.o ${dummy}b.c ${dummy}b.o $dummy $dummy.core core
  ;;

mips-*-irix[6789]*)
  # IRIX 6 and up always has a 64-bit mips cpu
  exact_cpu=mips64
  ;;

m68k-*-*)
  # NetBSD (and presumably other *BSD) "sysctl hw.model" gives for example
  #   hw.model = Apple Macintosh Quadra 610  (68040)
  exact_cpu=`(sysctl hw.model) 2>/dev/null | sed -n 's/^.*\(680[012346]0\).*$/m\1/p'`
  if test -z "$exact_cpu"; then
    # Linux kernel 2.2 gives for example "CPU: 68020" (tabs in between).
    exact_cpu=`sed -n 's/^CPU:.*\(680[012346]0\).*$/m\1/p' /proc/cpuinfo 2>/dev/null`
  fi
  if test -z "$exact_cpu"; then
    # Try: movel #0,%d0; rts
    # This is to check the compiler and our asm code works etc, before
    # assuming failures below indicate cpu characteristics.
    # .byte is used to avoid problems with assembler syntax variations.
    # For testing, provoke failures by adding "illegal" possibly as
    # ".byte 0x4A, 0xFC"
    cat >$dummy.s <<EOF
	.text
	.globl main
	.globl _main
main:
_main:
	.byte	0x70, 0x00
	.byte	0x4e, 0x75
EOF
    if ($CC_FOR_BUILD $dummy.s -o $dummy && ./$dummy) >/dev/null 2>&1; then

      # $SHELL -c is used to execute ./$dummy below, since (./$dummy)
      # 2>/dev/null still prints the SIGILL message on some shells.
      #
        # Try: movel #0,%d0
        #      rtd #0
        cat >$dummy.s <<EOF
	.text
	.globl main
	.globl _main
main:
_main:
	.byte	0x70, 0x00
	.byte	0x4e, 0x74, 0x00, 0x00
EOF
        if $CC_FOR_BUILD $dummy.s -o $dummy >/dev/null 2>&1; then
          $SHELL -c ./$dummy >/dev/null 2>&1
	  if test $? != 0; then
            exact_cpu=m68000    # because rtd didn't work
          fi
        fi
      #

      if test -z "$exact_cpu"; then
        # Try: trapf
        #      movel #0,%d0
        #      rts
        # Another possibility for identifying 68000 and 68010 is the
        # different value stored by "movem a0,(a0)+"
        cat >$dummy.s <<EOF
	.text
	.globl main
	.globl _main
main:
_main:
	.byte	0x51, 0xFC
	.byte	0x70, 0x00
	.byte	0x4e, 0x75
EOF
        if $CC_FOR_BUILD $dummy.s -o $dummy >/dev/null 2>&1; then
          $SHELL -c ./$dummy >/dev/null 2>&1
	  if test $? != 0; then
            exact_cpu=m68010    # because trapf didn't work
          fi
        fi
      fi

      if test -z "$exact_cpu"; then
        # Try: bfffo %d1{0:31},%d0
        #      movel #0,%d0
        #      rts
        cat >$dummy.s <<EOF
	.text
	.globl main
	.globl _main
main:
_main:
	.byte	0xED, 0xC1, 0x00, 0x1F
	.byte	0x70, 0x00
	.byte	0x4e, 0x75
EOF
        if $CC_FOR_BUILD $dummy.s -o $dummy >/dev/null 2>&1; then
          $SHELL -c ./$dummy >/dev/null 2>&1
	  if test $? != 0; then
            exact_cpu=m68360  # cpu32, because bfffo didn't work
          fi
        fi
      fi

      if test -z "$exact_cpu"; then
        # FIXME: Now we know 68020 or up, but how to detect 030, 040 and 060?
        exact_cpu=m68020
      fi
    fi
    rm -f $dummy.s $dummy.o $dummy $dummy.core core
  fi
  if test -z "$exact_cpu"; then
    case "$guess_full" in
      *-*-next* | *-*-openstep*)  # NeXTs are 68020 or better
        exact_cpu=m68020 ;;
    esac
  fi
  ;;


rs6000-*-* | powerpc*-*-*)
  # Enhancement: On MacOS the "machine" command prints for instance
  # "ppc750".  Interestingly on powerpc970-apple-darwin6.8.5 it prints
  # "ppc970" where there's no actual #define for 970 from NXGetLocalArchInfo
  # (as noted below).  But the man page says the command is still "under
  # development", so it doesn't seem wise to use it just yet, not while
  # there's an alternative.
  #
  # Try to read the PVR.  mfpvr is a protected instruction, NetBSD, MacOS
  # and AIX don't allow it in user mode, but the Linux kernel does.
  #
  # Using explicit bytes for mfpvr avoids worrying about assembler syntax
  # and underscores.  "char"s are used instead of "int"s to avoid worrying
  # whether sizeof(int)==4 or if it's the right endianness.
  #
  # Note this is no good on AIX, since a C function there is the address of
  # a function descriptor, not actual code.  But this doesn't matter since
  # AIX doesn't allow mfpvr anyway.
  #
  cat >$dummy.c <<\EOF
#include <stdio.h>
struct {
  int   n;  /* force 4-byte alignment */
  char  a[8];
} getpvr = {
  0,
  {
    0x7c, 0x7f, 0x42, 0xa6,  /* mfpvr r3 */
    0x4e, 0x80, 0x00, 0x20,  /* blr      */
  }
};
int
main ()
{
  unsigned  (*fun)();
  unsigned  pvr;

  /* a separate "fun" variable is necessary for gcc 2.95.2 on MacOS,
     it gets a compiler error on a combined cast and call */
  fun = (unsigned (*)()) getpvr.a;
  pvr = (*fun) ();

  switch (pvr >> 16) {
  case 0x0001: puts ("powerpc601");  break;
  case 0x0003: puts ("powerpc603");  break;
  case 0x0004: puts ("powerpc604");  break;
  case 0x0006: puts ("powerpc603e"); break;
  case 0x0007: puts ("powerpc603e"); break;  /* 603ev */
  case 0x0008: puts ("powerpc750");  break;
  case 0x0009: puts ("powerpc604e"); break;
  case 0x000a: puts ("powerpc604e"); break;  /* 604ev5 */
  case 0x000c: puts ("powerpc7400"); break;
  case 0x0041: puts ("powerpc630");  break;
  case 0x0050: puts ("powerpc860");  break;
  case 0x8000: puts ("powerpc7450"); break;
  case 0x8001: puts ("powerpc7455"); break;
  case 0x8002: puts ("powerpc7457"); break;
  case 0x8003: puts ("powerpc7447"); break; /* really 7447A */
  case 0x800c: puts ("powerpc7410"); break;
  }
  return 0;
}
EOF
  if ($CC_FOR_BUILD $dummy.c -o $dummy) >/dev/null 2>&1; then
    # This style construct is needed on AIX 4.3 to suppress the SIGILL error
    # from (*fun)().  Using $SHELL -c ./$dummy 2>/dev/null doesn't work.
    { x=`./$dummy`; } 2>/dev/null
    if test -n "$x"; then
      exact_cpu=$x
    fi
  fi
  rm -f $dummy.c $dummy.o $dummy $dummy.core

  # Grep the linux kernel /proc/cpuinfo pseudo-file.
  # Anything unrecognised is ignored, since of course we mustn't spit out
  # a cpu type config.sub doesn't know.
  if test -z "$exact_cpu" && test -f /proc/cpuinfo; then
    x=`grep "^cpu[ 	]" /proc/cpuinfo | head -n 1`
    x=`echo $x | sed -n 's/^cpu[ 	]*:[ 	]*\([A-Za-z0-9]*\).*/\1/p'`
    x=`echo $x | sed 's/PPC//'`
    case $x in
      601)     exact_cpu="power" ;;
      603ev)   exact_cpu="powerpc603e" ;;
      604ev5)  exact_cpu="powerpc604e" ;;
      603 | 603e | 604 | 604e | 750 | 821 | 860 | 970)
        exact_cpu="powerpc$x" ;;
      POWER[4-9])
        exact_cpu=`echo $x | sed "s;POWER;power;"` ;;
    esac
  fi

  if test -z "$exact_cpu"; then
    # On AIX, try looking at _system_configuration.  This is present in
    # version 4 at least.
    cat >$dummy.c <<EOF
#include <stdio.h>
#include <sys/systemcfg.h>
int
main ()
{
  switch (_system_configuration.implementation) {
  /* Old versions of AIX don't have all these constants,
     use ifdef for safety. */
#ifdef POWER_RS2
  case POWER_RS2:    puts ("power2");     break;
#endif
#ifdef POWER_601
  case POWER_601:    puts ("power");      break;
#endif
#ifdef POWER_603
  case POWER_603:    puts ("powerpc603"); break;
#endif
#ifdef POWER_604
  case POWER_604:    puts ("powerpc604"); break;
#endif
#ifdef POWER_620
  case POWER_620:    puts ("powerpc620"); break;
#endif
#ifdef POWER_630
  case POWER_630:    puts ("powerpc630"); break;
#endif
  /* Dunno what this is, leave it out for now.
  case POWER_A35:    puts ("powerpca35"); break;
  */
  /* This is waiting for a bit more info.
  case POWER_RS64II: puts ("powerpcrs64ii"); break;
  */
#ifdef POWER_4
  case POWER_4:    puts ("power4"); break;
#endif
#ifdef POWER_5
  case POWER_5:    puts ("power5"); break;
#endif
#ifdef POWER_6
  case POWER_6:    puts ("power6"); break;
#endif
#ifdef POWER_7
  case POWER_7:    puts ("power7"); break;
#endif
  default:
    if (_system_configuration.architecture == POWER_RS)
      puts ("power");
    else if (_system_configuration.width == 64)
      puts ("powerpc64");
  }
  return 0;
}
EOF
    if ($CC_FOR_BUILD $dummy.c -o $dummy) >/dev/null 2>&1; then
      x=`./$dummy`
      if test -n "$x"; then
        exact_cpu=$x
      fi
    fi
    rm -f $dummy.c $dummy.o $dummy
  fi

  if test -z "$exact_cpu"; then
    # On MacOS X (or any Mach-O presumably), NXGetLocalArchInfo cpusubtype
    # can tell us the exact cpu.
    cat >$dummy.c <<EOF
#include <stdio.h>
#include <mach-o/arch.h>
int
main (void)
{
  const NXArchInfo *a = NXGetLocalArchInfo();
  if (a->cputype == CPU_TYPE_POWERPC)
    {
      switch (a->cpusubtype) {
      /* The following known to Darwin 1.3. */
      case CPU_SUBTYPE_POWERPC_601:   puts ("powerpc601");  break;
      case CPU_SUBTYPE_POWERPC_602:   puts ("powerpc602");  break;
      case CPU_SUBTYPE_POWERPC_603:   puts ("powerpc603");  break;
      case CPU_SUBTYPE_POWERPC_603e:  puts ("powerpc603e"); break;
      case CPU_SUBTYPE_POWERPC_603ev: puts ("powerpc603e"); break;
      case CPU_SUBTYPE_POWERPC_604:   puts ("powerpc604");  break;
      case CPU_SUBTYPE_POWERPC_604e:  puts ("powerpc604e"); break;
      case CPU_SUBTYPE_POWERPC_620:   puts ("powerpc620");  break;
      case CPU_SUBTYPE_POWERPC_750:   puts ("powerpc750");  break;
      case CPU_SUBTYPE_POWERPC_7400:  puts ("powerpc7400"); break;
      case CPU_SUBTYPE_POWERPC_7450:  puts ("powerpc7450"); break;
      /* Darwin 6.8.5 doesn't define the following */
      case 0x8001:                    puts ("powerpc7455"); break;
      case 0x8002:                    puts ("powerpc7457"); break;
      case 0x8003:                    puts ("powerpc7447"); break;
      case 100:                       puts ("powerpc970");  break;
      }
    }
  return 0;
}
EOF
    if ($CC_FOR_BUILD $dummy.c -o $dummy) >/dev/null 2>&1; then
      x=`./$dummy`
      if test -n "$x"; then
        exact_cpu=$x
      fi
    fi
    rm -f $dummy.c $dummy.o $dummy
  fi
  ;;

sparc-*-* | sparc64-*-*)
  # If we can recognise an actual v7 then $exact_cpu is set to "sparc" so as
  # to short-circuit subsequent tests.

  # Grep the linux kernel /proc/cpuinfo pseudo-file.
  # A typical line is "cpu\t\t: TI UltraSparc II  (BlackBird)"
  # See arch/sparc/kernel/cpu.c and arch/sparc64/kernel/cpu.c.
  #
  if test -f /proc/cpuinfo; then
    if grep 'cpu.*Cypress' /proc/cpuinfo >/dev/null; then
      exact_cpu="sparc"   # ie. v7
    elif grep 'cpu.*Power-UP' /proc/cpuinfo >/dev/null; then
      exact_cpu="sparc"   # ie. v7
    elif grep 'cpu.*HyperSparc' /proc/cpuinfo >/dev/null; then
      exact_cpu="sparcv8"
    elif grep 'cpu.*SuperSparc' /proc/cpuinfo >/dev/null; then
      exact_cpu="supersparc"
    elif grep 'cpu.*MicroSparc' /proc/cpuinfo >/dev/null; then
      exact_cpu="microsparc"
    elif grep 'cpu.*MB86904' /proc/cpuinfo >/dev/null; then
      # actually MicroSPARC-II
      exact_cpu=microsparc
    elif grep 'cpu.*UltraSparc T3' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparct3"
    elif grep 'cpu.*UltraSparc T2' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparct2"
    elif grep 'cpu.*UltraSparc T1' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparct1"
    elif grep 'cpu.*UltraSparc III' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparc3"
    elif grep 'cpu.*UltraSparc IIi' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparc2i"
    elif grep 'cpu.*UltraSparc II' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparc2"
    elif grep 'cpu.*UltraSparc' /proc/cpuinfo >/dev/null; then
      exact_cpu="ultrasparc"
    fi
  fi

  # Grep the output from sysinfo on SunOS.
  # sysinfo has been seen living in /bin or in /usr/kvm
  #	cpu0 is a "SuperSPARC Model 41 SPARCmodule" CPU
  #	cpu0 is a "75 MHz TI,TMS390Z55" CPU
  #
  if test -z "$exact_cpu"; then
    for i in sysinfo /usr/kvm/sysinfo; do
      if $SHELL -c $i 2>/dev/null >conftest.dat; then
        if grep 'cpu0 is a "SuperSPARC' conftest.dat >/dev/null; then
          exact_cpu=supersparc
          break
        elif grep 'cpu0 is a .*TMS390Z5.' conftest.dat >/dev/null; then
          # TMS390Z50 and TMS390Z55
          exact_cpu=supersparc
          break
        fi
      fi
    done
    rm -f conftest.dat
  fi

  # Grep the output from prtconf on Solaris.
  # Use an explicit /usr/sbin, since that directory might not be in a normal
  # user's path.
  #
  #     SUNW,UltraSPARC (driver not attached)
  #     SUNW,UltraSPARC-II (driver not attached)
  #     SUNW,UltraSPARC-IIi (driver not attached)
  #     SUNW,UltraSPARC-III+ (driver not attached)
  #     Ross,RT625 (driver not attached)
  #     TI,TMS390Z50 (driver not attached)
  #
  # /usr/sbin/sysdef prints similar information, but includes all loadable
  # cpu modules, not just the real cpu.
  #
  # We first try a plain prtconf, since that is known to work on older systems.
  # But for newer T1 systems, that doesn't produce any useful output, we need
  # "prtconf -vp" there.
  #
  for prtconfopt in "" "-vp"; do
    if test -z "$exact_cpu"; then
      if $SHELL -c "/usr/sbin/prtconf $prtconfopt" 2>/dev/null >conftest.dat; then
	if grep 'SUNW,UltraSPARC-T3' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparct3
	elif grep 'SUNW,UltraSPARC-T2' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparct2
	elif grep 'SUNW,UltraSPARC-T1' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparct1
	elif grep 'SUNW,UltraSPARC-III' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparc3
	elif grep 'SUNW,UltraSPARC-IIi' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparc2i
	elif grep 'SUNW,UltraSPARC-II' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparc2
	elif grep 'SUNW,UltraSPARC' conftest.dat >/dev/null; then
	  exact_cpu=ultrasparc
	elif grep 'Ross,RT62.' conftest.dat >/dev/null; then
	  # RT620, RT625, RT626 hypersparcs (v8).
	  exact_cpu=sparcv8
	elif grep 'TI,TMS390Z5.' conftest.dat >/dev/null; then
	  # TMS390Z50 and TMS390Z55
	  exact_cpu=supersparc
	elif grep 'TI,TMS390S10' conftest.dat >/dev/null; then
	  exact_cpu=microsparc
	elif grep 'FMI,MB86904' conftest.dat >/dev/null; then
	  # actually MicroSPARC-II
	  exact_cpu=microsparc
	fi
      fi
      rm -f conftest.dat
    fi
  done

  # Grep the output from sysctl hw.model on sparc or sparc64 *BSD.
  # Use an explicit /sbin, since that directory might not be in a normal
  # user's path.  Example outputs,
  #
  #     hw.model: Sun Microsystems UltraSparc-IIi
  #
  if test -z "$exact_cpu"; then
    if $SHELL -c "/sbin/sysctl hw.model" 2>/dev/null >conftest.dat; then
      if grep -i 'UltraSparc-T3' conftest.dat >/dev/null; then
        exact_cpu=ultrasparct3
      elif grep -i 'UltraSparc-T2' conftest.dat >/dev/null; then
        exact_cpu=ultrasparct2
      elif grep -i 'UltraSparc-T1' conftest.dat >/dev/null; then
        exact_cpu=ultrasparct1
      elif grep -i 'UltraSparc-III' conftest.dat >/dev/null; then
        exact_cpu=ultrasparc3
      elif grep -i 'UltraSparc-IIi' conftest.dat >/dev/null; then
        exact_cpu=ultrasparc2i
      elif grep -i 'UltraSparc-II' conftest.dat >/dev/null; then
        exact_cpu=ultrasparc2
      elif grep -i 'UltraSparc' conftest.dat >/dev/null; then
        exact_cpu=ultrasparc
      elif grep 'TMS390Z5.' conftest.dat >/dev/null; then
        # TMS390Z50 and TMS390Z55
        exact_cpu=supersparc
      elif grep 'TMS390S10' conftest.dat >/dev/null; then
        exact_cpu=microsparc
      elif grep 'MB86904' conftest.dat >/dev/null; then
        # actually MicroSPARC-II
        exact_cpu=microsparc
      elif grep 'MB86907' conftest.dat >/dev/null; then
        exact_cpu=turbosparc
      fi
    fi
    rm -f conftest.dat
  fi

  # sun4m and sun4d are v8s of some sort, sun4u is a v9 of some sort
  #
  if test -z "$exact_cpu"; then
    case `uname -m` in
      sun4[md]) exact_cpu=sparcv8 ;;
      sun4u)    exact_cpu=sparcv9 ;;
    esac
  fi
  ;;


# Recognise x86 processors using a tricky cpuid with 4 arguments, repeating
# arguments; for x86-64 we effectively pass the 1st in rdx and the 2nd in rcx.
# This allows the same asm to work for both standard and Windoze calling
# conventions.

i?86-*-* | amd64-*-* | x86_64-*-*)
  cat <<EOF >${dummy}0.s
	.globl cpuid
	.globl _cpuid
cpuid:
_cpuid:
	pushl %esi
	pushl %ebx
	movl 24(%esp),%eax
	.byte 0x0f
	.byte 0xa2
	movl 20(%esp),%esi
	movl %ebx,(%esi)
	movl %edx,4(%esi)
	movl %ecx,8(%esi)
	popl %ebx
	popl %esi
	ret
EOF
  cat <<EOF >${dummy}1.s
	.globl cpuid
	.globl _cpuid
cpuid:
_cpuid:
	push	%rbx
	mov	%rdx, %r8
	mov	%ecx, %eax
	.byte	0x0f
	.byte	0xa2
	mov	%ebx, (%r8)
	mov	%edx, 4(%r8)
	mov	%ecx, 8(%r8)
	pop	%rbx
	ret
EOF
  cat <<EOF >${dummy}2.c
#include <string.h>
#include <stdio.h>
#define CPUID(a,b) cpuid(b,a,a,b)
#if __cplusplus
extern "C"
#endif
unsigned int cpuid (int, char *, char *, int);
int
main ()
{
  char vendor_string[13];
  char dummy_string[12];
  long fms;
  int family, model, stepping;
  const char *modelstr;
  int cpu_64bit = 0;

  CPUID (vendor_string, 0);
  vendor_string[12] = 0;

  fms = CPUID (dummy_string, 1);

  family = ((fms >> 8) & 0xf) + ((fms >> 20) & 0xff);
  model = ((fms >> 4) & 0xf) + ((fms >> 12) & 0xf0);
  stepping = fms & 0xf;

  modelstr = "$guess_cpu";

  /**************************************************/
  /*** WARNING: keep this list in sync with fat.c ***/
  /**************************************************/
  if (strcmp (vendor_string, "GenuineIntel") == 0)
    {
      switch (family)
	{
	case 5:
	  if (model <= 2)	modelstr = "pentium";
	  else if (model >= 4)	modelstr = "pentiummmx";
	  break;
	case 6:
	  if (model <= 1)		modelstr = "pentiumpro";
	  else if (model <= 6)		modelstr = "pentium2";
	  else if (model <= 8)		modelstr = "pentium3";
	  else if (model <= 9)		modelstr = "pentiumm";
	  else if (model <= 0x0c)	modelstr = "pentium3";
	  else if (model <= 0x0e)	modelstr = "pentiumm";
	  else if (model <= 0x19)	cpu_64bit = 1, modelstr = "core2";
	  else if (model == 0x1a)	cpu_64bit = 1, modelstr = "coreinhm"; /* NHM Gainestown */
	  else if (model == 0x1c)	cpu_64bit = 1, modelstr = "atom";  /* Silverthorne */
	  else if (model == 0x1d)	cpu_64bit = 1, modelstr = "core2"; /* PNR Dunnington */
	  else if (model == 0x1e)	cpu_64bit = 1, modelstr = "coreinhm"; /* NHM Lynnfield/Jasper */
	  else if (model == 0x25)	cpu_64bit = 1, modelstr = "coreiwsm"; /* WSM Clarkdale/Arrandale */
	  else if (model == 0x26)	cpu_64bit = 1, modelstr = "atom";  /* Lincroft */
	  else if (model == 0x27)	cpu_64bit = 1, modelstr = "atom";  /* Saltwell */
	  else if (model == 0x2a)	cpu_64bit = 1, modelstr = "coreisbr"; /* SB */
	  else if (model == 0x2c)	cpu_64bit = 1, modelstr = "coreiwsm"; /* WSM Gulftown */
	  else if (model == 0x2d)	cpu_64bit = 1, modelstr = "coreisrb"; /* SBC-EP */
	  else if (model == 0x2e)	cpu_64bit = 1, modelstr = "coreinhm"; /* NHM Beckton */
	  else if (model == 0x2f)	cpu_64bit = 1, modelstr = "coreiwsm"; /* WSM Eagleton */
	  else cpu_64bit = 1, modelstr = "corei"; /* default */
	  break;
	case 15:
	  cpu_64bit = 1, modelstr = "pentium4";
	  break;
	}
    }
  else if (strcmp (vendor_string, "AuthenticAMD") == 0)
    {
      switch (family)
	{
	case 5:
	  if (model <= 3)	modelstr = "k5";
	  else if (model <= 7)	modelstr = "k6";
	  else if (model == 8)	modelstr = "k62";
	  else if (model == 9)	modelstr = "k63";
	  else if (model == 10) modelstr = "geode";
	  else if (model == 13) modelstr = "k63";
	  break;
	case 6:
	  modelstr = "athlon";
	  break;
	case 15:		/* K8, K9 */
	  cpu_64bit = 1, modelstr = "k8";
	  break;
	case 16:		/* K10 */
	  cpu_64bit = 1, modelstr = "k10";
	  break;
	case 17:		/* AMD Internal, assume future K10 */
	  cpu_64bit = 1, modelstr = "k10";
	  break;
	case 18:		/* Llano, uses K10 core */
	  cpu_64bit = 1, modelstr = "k10";
	  break;
	case 19:		/* AMD Internal, assume future K10 */
	  cpu_64bit = 1, modelstr = "k10";
	  break;
	case 20:		/* Bobcat */
	  cpu_64bit = 1, modelstr = "bobcat";
	  break;
	case 21:		/* Bulldozer */
	  cpu_64bit = 1, modelstr = "bulldozer";
	  break;
	case 22:		/* AMD Internal, assume future bulldozer */
	  cpu_64bit = 1, modelstr = "bulldozer";
	  break;
	}
    }
  else if (strcmp (vendor_string, "CyrixInstead") == 0)
    {
      /* Should recognize Cyrix' processors too.  */
    }
  else if (strcmp (vendor_string, "CentaurHauls") == 0)
    {
      switch (family)
	{
	case 6:
	  if (model < 9)	modelstr = "viac3";
	  else if (model < 15)	modelstr = "viac32";
	  else			cpu_64bit = 1, modelstr = "nano";
	  break;
	}
    }

  /* If our cpuid-based exact guess is more conservative than the previous
     guess, revert.  This is of course wrong, but it can happen in an emulator,
     so this workaround allows for successful 64-bit builds.  */
  if (strcmp ("$guess_cpu", "x86_64") == 0 && ! cpu_64bit)
    modelstr = "$guess_cpu";

  printf ("%s", modelstr);
  return 0;
}
EOF

  if ($CC_FOR_BUILD ${dummy}1.s ${dummy}2.c -o $dummy) >/dev/null 2>&1; then
    # On 80386 and early 80486 cpuid is not available and will result in a
    # SIGILL message, hence 2>/dev/null.
    #
    # On i386-unknown-freebsd4.9, "/bin/sh -c ./dummy" seems to send an
    # "Illegal instruction (core dumped)" message to stdout, so we test $?
    # to check if the program run was successful.
    #
    x=`$SHELL -c ./$dummy 2>/dev/null`
    if test $? = 0 && test -n "$x"; then
      exact_cpu=$x
    fi
  fi

  if test -z "$exact_cpu"; then
  if ($CC_FOR_BUILD ${dummy}0.s ${dummy}2.c -o $dummy) >/dev/null 2>&1; then
    # On 80386 and early 80486 cpuid is not available and will result in a
    # SIGILL message, hence 2>/dev/null.
    #
    # On i386-unknown-freebsd4.9, "/bin/sh -c ./dummy" seems to send an
    # "Illegal instruction (core dumped)" message to stdout, so we test $?
    # to check if the program run was successful.
    #
    x=`$SHELL -c ./$dummy 2>/dev/null`
    if test $? = 0 && test -n "$x"; then
      exact_cpu=$x
    fi
  fi
  fi

  # We need to remove some .o files here since lame C compilers
  # generate these even when not asked.
  rm -f ${dummy}0.s ${dummy}0.o ${dummy}1.s ${dummy}1.o ${dummy}2.c ${dummy}2.o $dummy
  ;;

s390*-*-*)
  model=`grep "^processor 0: version =" /proc/cpuinfo | sed -e 's/.*machine = //'`
  case $model in
    2064 | 2066) zcpu="z900" ;;
    2084 | 2086) zcpu="z990" ;;
    2094 | 2096) zcpu="z9"   ;;
    2097 | 2098) zcpu="z10"  ;;
    2817 | 2818 | *) zcpu="z196" ;;
  esac
  case "$guess_full" in
    s390x-*-*) exact_cpu=${zcpu}    ;;
    s390-*-*)  exact_cpu=${zcpu}esa ;;
  esac
  ;;

esac



# -------------------------------------------------------------------------
# Use an exact cpu, if possible

if test -n "$exact_cpu"; then
  echo "$exact_cpu$guess_rest"
else
  echo "$guess_full"
fi
exit 0



# Local variables:
# fill-column: 76
# End:
